31405791
BOSCH 31405791 High Pressure Fuel Pump Volvo XC90 XC60 S90 V90 V60 2.0T Drive-E T5 T6 B4204T 0261520268
31375481, 31478293, 31478294, 0261520268, GDP607, HM10052--200 barVehicle & Engine Fitment
Technical Specifications
| Specification | Value |
|---|---|
| sku | 31405791 |
| brand | BOSCH |
| manufacturer_code | 0261520268 |
| pressure_rating | 200 bar (2900 psi) |
| torque_flange | 20 N-m (15 lb-ft) |
| torque_line | 28 N-m (21 lb-ft) |
| engine_family | Volvo 2.0L Drive-E Turbo / Twincharged DOHC 16V B4204T (T5 / T6) |
| Operating PressureCore Spec |
Matched High-Pressure Fuel Injectors (Fuel Circuit Assembly)
Directly supplied by this high-pressure pump. Verify injector backleak balance if rail pressure fails to build during engine cranking.
Diagnostic Trouble Codes & Fault Protocols
Common diagnostic trouble codes (DTCs) triggered when this common rail injector experiences wear, circuit faults, or calibration drift:
Fuel Rail / System Pressure Too Low
Excessive internal backleak from worn control valve seats drops common rail pressure below target under engine load.
Injector Circuit Malfunction / Open Circuit
Solenoid coil resistance drift (0.2-0.5 Ω) or piezo stack degradation triggers driver stage shutdown on affected cylinders.
Cylinder Misfire & Balancing Deviation
Carbon-clogged nozzle spray holes or missing IMA calibration causes uneven cylinder contribution. Recode ECM and verify washer seating.
Fuel Rail / System Pressure Too High
Spill line backpressure or stuck metering valve prevents rail depressurization, creating overpressure risks under load.
Technical Diagnostic & Service Protocols
Authoritative field procedures, diagnostic testing thresholds, and service SOPs for this assembly.